Sweetheart Lake Dam

BONE MILL BROOK· Tolland, Connecticut· Built 1927· Earth· 16 ft tall
Significant Hazard Recreation Private

Key Takeaway

Sweetheart Lake Dam is classified as significant hazard in Connecticut. It was completed in 1927 and is 99 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 16 ft (taller than 63.7% in CT)
Dam Length170 ft
Dam TypeEarth
Max Storage55 acre-ft
Normal Storage55 acre-ft
Surface Area10 acres
Drainage Area3 sq mi
Max Discharge173 cfs
Year Completed1927 (99 years old)
NID IDCT00616

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: November 14, 2016
State Regulated: Yes
Regulatory Agency: DEEP

Ownership

Connecticut Trails Council of Girl Scouts, Inc.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Sweetheart Lake Dam?

Sweetheart Lake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Sweetheart Lake Dam?

Sweetheart Lake Dam is owned by Connecticut Trails Council of Girl Scouts, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Sweetheart Lake Dam built?

Sweetheart Lake Dam was completed in 1927, making it 99 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Sweetheart Lake Dam?

Sweetheart Lake Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Sweetheart Lake Dam?

Sweetheart Lake Dam has a dam height of 16 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Sweetheart Lake Dam last inspected?

Sweetheart Lake Dam was last inspected on November 14, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.